CN106312957B - Power tool - Google Patents
Power tool Download PDFInfo
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- CN106312957B CN106312957B CN201510385459.2A CN201510385459A CN106312957B CN 106312957 B CN106312957 B CN 106312957B CN 201510385459 A CN201510385459 A CN 201510385459A CN 106312957 B CN106312957 B CN 106312957B
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- power tool
- transmission device
- operating element
- metal
- elastic element
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Abstract
The present invention relates to a kind of power tool, which has the transmission device of shift-variable, and for the transmission device at least there are two gear, operator realizes the switching of gear by controlling the operating element being arranged on shell.The power tool determines that the lock position of operating element, the lock position are corresponding with the gear of transmission device using the coupling between operating element, elastic element, metal bow and tool housing.Manufacturing cost is greatly reduced while improving the reliability and stability of operation with the flexible deformation that the deformation substituted metal of elastic element bends.
Description
Technical field
The present invention relates to a kind of power tool, which has the transmission device of shift-variable.
Background technique
A kind of power tool, especially electric hand drill, including at least two gears of height.One is described in CN1317108C
Gearshift of the kind for the multi-range transmission of electric tool.Wherein, the adjusting campaign of shift carriage is bent by a metal
Transmitting.Such structure is in current electric tool with extensive.
Using metal bow come when carrying out speed switching, metal bow can generate in radial directions during switching gear
Certain deflection, this deflection is difficult to control using traditional structure at present, and this deflection is likely to cause metal
Interference of the bow with the disengaging of movable tooth circle or with casing.
It there is also the problem of can not adjusting in place in shift process, the gear in transmission device, which will appear, at this time sweeps tooth
Phenomena such as, fatal damage is caused to gear, greatly reduces the service life of gear.
Moreover if without reasonable position-limit mechanism, which there is also that trip stop and gear switching operation are laborious etc. to ask
Topic, causes inconvenience to the user and perplexs.
Summary of the invention
It is an object of the invention to: in view of the above-mentioned problems of the prior art, propose that a kind of stable operation is reliable, cost
The power tool of low advantage.
In order to reach the goals above, power tool of the invention includes motor, for providing electric power to the power tool；
Work head, the output device of the power tool；Transmission device, for delivering power to the work head, which includes
At least two gears；Operating element is arranged on shell；Metal bow, for transmit the operating element to the transmission device can
The load of modulability；Elastic element, the operating element operate the metal bow by the elastic element；Wherein, the bullet
Property element can to the metal bend apply along the transmission device radial direction active force.
Therefore, it can be very good control transmission device using the elastic element, and then reliably control the switching of gear, and
And greatly reduce the manufacturing cost of metal bow.
Further, the operating element further includes card slot and groove, and for accommodating the elastic element, which uses the card slot
Bend in accommodating metal.
Further, the power tool include at least two support devices, during gear switch to transmission device into
Row Auxiliary support and guidance.
Further, the operating element includes the protrusion or recesses fit at least one lug boss, with the shell,
For operating element to be fixed in lock position.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is the complete machine structure schematic diagram of one embodiment of the present of invention.
Fig. 2 is the partial exploded view of Fig. 1 embodiment.
Fig. 3 is the status diagram of the gear one of Fig. 1 embodiment.
Fig. 4 is the status diagram of the gear two of Fig. 1 embodiment.
Fig. 5 is the bottom view of the operating element of Fig. 1 embodiment.
Fig. 6 is the partial enlarged view of the shell protrusions of Fig. 1 embodiment.
Specific embodiment
The basic structure of the power tool of the present embodiment is as depicted in figs. 1 and 2, e.g. Rechargeable electric drill or rechargeable
Bottle opener, including motor 5, transmission device 3 and work head 1.It include multiple sun gears and planetary gear inside transmission device 3, in figure not
It shows, reference can be made to the structure of Chinese patent CN1317108C describes.Further include an operating element 4, operates operating element along direction
The speed switching of at least two gears is realized in 10,11 movements.
Metal bow 7 can execute pendulum motion in relative to shell 2, and as shown in Figure 3 and Figure 4, two of metal bow are most
Final position sets two gears corresponding to transmission device 3, that is, the lock position of operating element 4 and metal bow 7.
As shown in figure 3, the swing of metal bow 7 is also respectively by two support devices 8 of two sides, these support devices 8
In the outside of the shell of transmission device 3, also there is mutually matched guiding lead-in chamfered, support and guide metal bow 7 specific
Region prolong specific angle and swung.
The recess portion 9 of two ends insertion gear mechanism housing of metal bow 7, when metal bow 7 is swung around support device 8
When, the movable tooth circle movement in transmission device 3 is driven, realizes the switching of gear.
As shown in Figure 5 and Figure 6, there is at least one protrusion in the side of operating element 4, when operation operating element 4 is along direction 10
Or when the movement of direction 11, which contacts with protrusion or recess portion 21 on shell 2, described two when moving to final position
Male cooperation forms locking.The present embodiment also can reach same as lug boss using lug boss using the design of recess portion
Locking effect belongs to replacement method commonly used in the art.
The operating element 4 further includes the groove 43 for accommodating the card slot 42 of elastic element and receiving metal bow 7.When operation is grasped
When making element 4, elastic element 6 is compressed, and applies certain pressure to the metal bow 7 being in contact with it.The present embodiment provides preferably
Elastic element be spring the elastic elements such as leaf spring, rubber parts also can be used in the cognitive range of those skilled in the art,
It also belongs in the scope of protection of the invention.
When operating element 4 and metal bow 7 be in state as shown in Figure 4 when, operation operating element 4 along direction 11 move to as
During lock position shown in Fig. 3, if not using elastic element 6, metal bow is before this constantly by edge in this motion process
Tool output shaft radial compression, generates certain flexible deformation, is then constantly discharged again.The present invention is in operating element 4
An elastic element 6 is set between metal bow 7, in above-mentioned motion process, elastic element 6 is generated certain change by compression
Shape amount, and metal bow 7 will not be deformed.Elastic element 6 drives metal bow 7 to swing to direction 11, meanwhile, the end of metal bow 7
Portion is plugged on the recess portion of the shell of transmission device 3, links with the movable tooth circle in transmission device 3.When operating element moves to finally
When position, movable tooth circle also moves to final position, realizes speed switching.In order to realize more stable limit, can also operate
The side setting multiple raised 41 of element 4, the protrusion when operating element 4 moves to final position, in the protrusion 41 and shell
21 are connected together, and the flange of the protrusion 21 on shell carries out operating element 4 effectively to add locking, so that structure more may be used
It leans on.Equally, when operation operating element 3 is moved along direction 10, process is identical as along direction 11.
During whole operation, the radial deformation of metal bow 7 is replaced using the radial deformation of elastic element 6, in this way
Design deformation performance that metal is bent it is of less demanding, the manufacturing cost of metal bow 7 can be reduced, meanwhile, avoid due to metal
The deformation of bow 7 leads to safety problem caused by the interference with the disengaging of movable tooth circle or with casing.After gear switch is completed,
During tool work, if work head by certain axial impact, for traditional structure, since elastic element 6 is right
The problems such as metal bow 7 applies certain axial compressive force, and the influence of power generates trip stop so metal bow 7 will not be hit, more
Securely and reliably.
Situation not in place is adjusted if encountered in speed handoff procedure, bends the transmission of 7 guided-movings by metal at this time
Movable tooth circle in device 3 does not move to final position, when operator does not recognize this problem and be switched in use, by
The component that has along transmission device axial direction is acted on metal bow 7 in elastic element 6, so metal bends 7 meetings in the moment of booting
By the effect of the axial thrust load, drives the movable tooth circle in transmission device 3 to move to final position rapidly, avoid due to movable tooth
Tooth phenomenon is swept in circle movement generation not in place, is extended the service life of machine, is improved the safety of operation.
It was verified that the power tool of the present embodiment is easy to operate, it is stable and reliable for performance.
Claims (4)
1. a kind of power tool, comprising:
Motor, for providing electric power to the power tool；
Work head, the output device of the power tool；
Transmission device, for delivering power to the work head, the transmission device includes at least two gears；
Operating element is arranged on shell；
Metal bow, for transmitting load of the operating element to the controllability of the transmission device；
Elastic element, the operating element operate the metal bow by the elastic element；
It is characterized by: the elastic element can bend the active force applied along the transmission device radial direction to the metal.
2. power tool according to claim 1, it is characterised in that: the operating element further includes card slot and groove, is somebody's turn to do
Card slot is for accommodating the elastic element, and the groove is for accommodating metal bow.
3. power tool according to claim 2, it is characterised in that: the power tool includes at least two support devices,
Auxiliary support and guidance are carried out to transmission device during gear switch.
4. power tool according to claim 3, it is characterised in that: the operating element includes at least one lug boss,
With the protrusion or recesses fit on the shell, for operating element to be fixed in lock position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385459.2A CN106312957B (en) | 2015-07-06 | 2015-07-06 | Power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385459.2A CN106312957B (en) | 2015-07-06 | 2015-07-06 | Power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106312957A CN106312957A (en) | 2017-01-11 |
| CN106312957B true CN106312957B (en) | 2018-12-28 |
Family
ID=57727263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510385459.2A Active CN106312957B (en) | 2015-07-06 | 2015-07-06 | Power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106312957B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237887A (en) * | 2017-07-01 | 2017-10-10 | 浙江亚特电器有限公司 | A kind of planetary gear roller box and electric tool |
| DE102018220031A1 (en) * | 2018-11-22 | 2020-05-28 | Robert Bosch Gmbh | Hand machine tool with a gear change device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411958A (en) * | 2001-10-06 | 2003-04-23 | 罗伯特·博施有限公司 | Two-stage speed variator device for converting electric tool |
| CN1419997A (en) * | 2001-11-16 | 2003-05-28 | 罗伯特·博施有限公司 | Shift device of multi-speed gear-box for electric machine tool |
| US20080098842A1 (en) * | 2006-10-31 | 2008-05-01 | David Spielmann | Electrical tool with a multi-stage gear transmission |
| CN101745899A (en) * | 2008-12-02 | 2010-06-23 | 罗伯特·博世有限公司 | Handheld power tool with a shiftable gear |
| CN201552317U (en) * | 2009-10-27 | 2010-08-18 | 苏州宝时得电动工具有限公司 | Drilling tool |
| CN103101032A (en) * | 2011-11-14 | 2013-05-15 | 松下电器产业株式会社 | Switch operation device |
| CN103692397A (en) * | 2012-09-27 | 2014-04-02 | 松下电器产业株式会社 | Power tool |
| CN203892547U (en) * | 2014-05-16 | 2014-10-22 | 东莞百事得电动工具有限公司 | Speed change buffer device for speed change gearbox of electric tool |
-
2015
- 2015-07-06 CN CN201510385459.2A patent/CN106312957B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411958A (en) * | 2001-10-06 | 2003-04-23 | 罗伯特·博施有限公司 | Two-stage speed variator device for converting electric tool |
| CN1419997A (en) * | 2001-11-16 | 2003-05-28 | 罗伯特·博施有限公司 | Shift device of multi-speed gear-box for electric machine tool |
| US20080098842A1 (en) * | 2006-10-31 | 2008-05-01 | David Spielmann | Electrical tool with a multi-stage gear transmission |
| CN101745899A (en) * | 2008-12-02 | 2010-06-23 | 罗伯特·博世有限公司 | Handheld power tool with a shiftable gear |
| CN201552317U (en) * | 2009-10-27 | 2010-08-18 | 苏州宝时得电动工具有限公司 | Drilling tool |
| CN103101032A (en) * | 2011-11-14 | 2013-05-15 | 松下电器产业株式会社 | Switch operation device |
| CN103692397A (en) * | 2012-09-27 | 2014-04-02 | 松下电器产业株式会社 | Power tool |
| CN203892547U (en) * | 2014-05-16 | 2014-10-22 | 东莞百事得电动工具有限公司 | Speed change buffer device for speed change gearbox of electric tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106312957A (en) | 2017-01-11 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210928 Address after: 321300 No. 636, Jiufeng street, Jinhua Industrial Park, Zhejiang Province Patentee after: Zhejiang Crown Electric Tools Manufacture Co.,Ltd. Address before: 321017 first floor of plant 5, No. 418 Wenxi street, Jinpan development new area, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG GEZHI TOOLS Co.,Ltd. |
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| TR01 | Transfer of patent right |